SETI confirms through extensive radio observations: Comet 3I/Atlas has no alien technology

9:28 am

New Hubble image of 3I/Atlas
Comet 3I/Atlas as seen by Hubble
in November 2025. Click for original.

Hardly a surprise: In order to put an end to the stupid clickbait speculations of some hack scientists, the SETI Institute has just completed seven hours of detailed radio observations of interstellar comet 3I/Atlas, and has confirmed that it has no alien technology and is nothing more than a comet, albeit unusual because it comes from outside our solar system.

The team identified nearly 74 million narrowband signals. After removing human interference and filtering for signals matching 3I/ATLAS’s movement, only about 200 remained for review. All traced back to technology on the surface of the Earth or our own Earth-orbiting satellites.

While no technosignatures were found, the study sets new constraints reinforcing that 3I/ATLAS is a natural object. The observations place upper limits on the power of any radio transmitter on or near 3I/ATLAS, ruling out signals stronger than about 10–110 watts, approximately the power of a household appliance, over the detected frequencies.

In other words, the comet is a comet. This research also demonstrated new astronomical capabilities that can quickly do similar observations when new interstellar objects show up.

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First parachute drop test for The Exploration Company’s Nyx capsule a success

9:11 am

Nyx drop test

The French capsule startup The Exploration Company on May 19, 2026 successfully completed the first parachute drop test for its Nyx capsule in the Mojave desert in California.

I have embedded the company’s video of the test below. The screen capture to the right shows the capsule descending on its three main parachutes.

This test focused on one of the most critical phases of spacecraft recovery – the transition from drogue parachutes to the main parachutes that bring the vehicle safely to the ground. For this campaign, TEC used a dedicated drop test vehicle, or DTV, built specifically to evaluate parachute deployment, handover timing and vehicle dynamics during this phase of descent. The DTV was not designed to be a full spacecraft. It was designed to answer a precise engineering question: does the recovery system deploy in the right sequence, at the right time, with the expected behavior? This distinction matters. It allows us to focus effort and investment where it has the most impact – on the recovery system itself.

For this campaign, the DTV replicated the relevant mass properties, aerodynamic profile and key structural interfaces of the Nyx capsule, while using a robust internal structure and sacrificial outer panels to support ground impact, hardware recovery and future test campaigns.

The drop occurred when the helicopter carrying the DTV reached about 1.7 miles altitude. As the DTV dropped it appeared the parachute system worked perfectly, with the drogue chutes followed by the three main parachutes releases as planned.

The company is targeting 2028 for the first orbital demo flight of Nyx itself. Its relatively fast-paced development in a sense puts to shame the American space industry, which except of SpaceX has not been able to develop such large orbital capsules. Northrop Grumman’s Cygnus capsule might be flying, but much of its development occurred not in the U.S. but in Europe. Meanwhile, Boeing’s Starliner and Sierra Space’s Dream Chaser both remain grounded and unused after more than a decade of development.
» Read more

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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

The print edition can be purchased at Amazon or any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

German rocket startup HyImpulse signs deal to consider launching from Oman

8:49 am

Active and proposed Middle East spaceports
Active and proposed Middle East spaceports

The German rocket startup HyImpulse has signed an agreement with Oman to study the possibility of launching its rockets from Oman’s proposed Etlaq spaceport located near the town of Duqm.

Under the proposed collaboration, HyImpulse will evaluate both near-term mission opportunities and the feasibility of establishing a longer-term operational presence at Etlaq Spaceport. Beyond offering an alternative launch base outside northern Europe, the arrangement is expected to capitalize on Oman’s advantageous geographic latitude, enabling access to a broader range of orbital inclinations and enhancing mission flexibility for customers across the GCC [Gulf Cooperation Council], Asia and, potentially, emerging African markets.

The two sides also plan to assess the possibility of supporting future launch campaigns involving HyImpulse’s SR75 and SL1 launch vehicles from Oman. Etlaq would provide access to launch infrastructure, operational facilities and mission-support capabilities as the European company studies deployment opportunities in the Sultanate.

HyImpulse is now the second European rocket startup to sign such a deal. In 2025 the Spanish company PLD agreed to use Duqm as well.

At the same time, Oman had previously said the spaceport would see a number of suborbital test flights in 2025, none of which happened.

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Conscious Choice cover

Now available in hardback and paperback as well as ebook!

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.

 

All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.

 

Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.

June 3, 2026 Quick space links

2:48 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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Leaving Earth cover

Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.

If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.

 

Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.

 
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke

Gigantic slumping Martian cliffs

11:14 am

Gigantic slumping Martian cliffs
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and enhanced to post here, was taken on May 5, 2026 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels this an “alluvial fan.” What we are looking at is the top 5,700 feet of a 9,400-foot-high cliff which is slumping downward. As it does so, its outer layers have been falling downward into the canyon below almost like liquid, producing the slope’s streaked look.

According to this definition, alluvial fans…

are mounds of coarse grained sediments formed when a confined stream disgorges into an unconfined area. They typically occur along the margins of mountain ranges where bedrock incised channels draining uplands spill out on to broad open valley floors. Alluvial fans occur in areas with significant topographic relief caused by rapid subsidence or uplift (rift basins, foreland basins, fold-and-thrust belts, etc.).

While the definition implies these fans only form from the flow of liquid water, that does not have to be the case. Many fans form from the long term downward motion of material from mountainsides into lower valleys or canyons, though water — either by rain, a freeze-thaw cycle, or streamflow — is usually a factor in causing this erosion.

At this location something has made that cliff slump, and in doing so produced the flow patterns on that slope
» Read more

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SpaceX launches 24 more Starlink satellites

9:03 am

SpaceX this morning successfully placed another 24 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California.

The first stage completed its 16th flight (37 days after its previous flight), landing on a drone ship in the Pacific.

The leaders in the 2026 launch race:

65 SpaceX
32 China
8 Russia
7 Rocket Lab

For the third straight year SpaceX leads the entire world combined in total launches, 65 to 57.

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Venturi Space expands investment in new French factory for building Astrolab’s rover

8:59 am

Venturi Space, the European half of the partnership with the rover startup Astrolab, is increasing its investment in a new French factory from 100 million to 250 million euros.

On 1 June, Venturi Space announced that it had increased its expected investment in the new facility to €250 million. The announcement indicated that it would no longer begin with the initial smaller facility and would instead move directly to the full 16,000-square-metre planned “technology centre.” This likely accounts for the additional €150 million in funding.

According to the company’s 1 June press release, the facility will be used for the “design and manufacture of critical technologies for lunar and Martian mobility, as well as [for] the assembly of the rovers developed by the company.” …Venturi Space is providing wheels, batteries, and battery management systems to US-based Venturi Astrolab for use aboard its rovers. During a 26 May event, NASA announced that Venturi Astrolab was one of two companies selected to build rovers for the agency’s Artemis programme.

The partnership is an unusual one. Venturi Space and Astrolab are separate companies, working together to build Astrolab’s rovers for NASA. Venturi however is also developing its own rover for the European Space Agency.

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NASA officially ends its MAVEN Mars orbiter mission

8:42 am

High altitude wind patterns on Mars
Mars’ global high altitude wind patterns,
found by MAVEN.

More than six months after engineers lost contact with the Mars orbiter MAVEN, NASA today officially ended the mission, determining the spacecraft is “not recoverable.”

The agency convened an anomaly review board in February to evaluate recovery efforts and assess the spacecraft’s probable current state. The review board has determined that the MAVEN spacecraft is not recoverable, and it is no longer capable of performing its science and data relay mission, which is consistent with the mission team’s findings.

Telemetry from MAVEN prior to the spacecraft’s passage behind Mars in December showed all subsystems working normally. After the spacecraft emerged, NASA’s Deep Space Network (DSN) did not observe a signal. A brief fragment of telemetry data from analysis of radio signals recorded by the DSN’s open-loop receivers indicated the spacecraft was in safe mode and rotating at an unusually high rate when it emerged from behind Mars, indicating a disruption in MAVEN’s orbit trajectory. The review board concluded that due to this rotation, the batteries on the spacecraft had drained, causing the communications system to lose power and rendering MAVEN in an unrecoverable state.

The actual cause of the rotation remains uncertain.

MAVEN’s mission was to study the atmosphere and surrounding environment of Mar. It gave scientists their first data on how Mars could have lost both its atmosphere as well as a significant amount of its initial supply of water. It also produced the first map of the red planet’s high altitude winds, finding that even at high altitude the winds shift around the Tharsis Bulge where Mars’s biggest volcanoes are located.

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Axiom’s CEO provides update on corrosion and the timetable for its space station

8:01 am

Axiom's module assembly sequence
Axiom’s module assembly sequence

Jonathan Cirtain, the CEO of the space station startup Axiom, this week gave an interview where he provided a short update on the status of their station’s construction, including the present launch timetable as well as the corrosion issue known to exist on the two module hulls that Thales-Alenia is presently building for the company.

It [the corrosion] was actually observed during ISS using a similar manufacturing technique. They mitigated it.

Now it’s come back. … We’re going to fix it the same way they fixed it for the International Space Station, the Columbus module, which has been operational now for eighteen, nineteen years. Had that same challenge. So we’re working our way through that. That should get resolved by the end of the month of June.

Because this interview took place just prior to NASA’s announcement yesterday that it has abandoned its core module concept proposed last month, Cirtain describes how the company was considering some design and construction changes to deal with it. That issue however has now vanished.

Cirtain added that the module’s hulls will next be shipped from the Thales-Alenia factory in Europe to the U.S., where Axiom will then begin installing the interior and exterior components of each, with a planned launch of the first, dubbed the PPTM, by 2028, the same target date the company announced in January 2026. That the date has not changed six months later suggests either the corrosion issue did not delay things, or it was the cause of that delay.

As I noted in January, Axiom’s schedule margins for getting its station launched, docked to ISS, loaded with ISS equipment, and then separated before ISS retires in 2030 are extremely tight. It cannot afford any further delays.

In other Axiom news, the company announced yesterday that it has established a a wholly owned subsidiary based in Switzerland, dubbed Axiom Switzerland, thus establishing itself within the Europe to facilitate future contracts with the European Space Agency, the European Union, and the member nations of both.

Below are my updated rankings of the five American space stations presently under development:
» Read more

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